Art history is, of course, full of referencing, echoing, quoting, and flat out copying. From the Renaissance artists who fished symbols and stories from a community pool to pop artists who fished in a pool of brand recognition, and onward to the appropriation...

James T. Bartlett has resigned as National Portrait Gallery commissioner, in protest of the Smithsonian's removal of David Wojnarowicz's A Fire in My Belly from the "Hide/Seek: Difference and Desire in American Portraiture" exhibition.